| Raghu Gandham | 405b802 | 2012-07-25 18:16:42 -0700 | [diff] [blame] | 1 | /* $OpenBSD: regdef.h,v 1.3 2005/08/07 07:29:44 miod Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 1992, 1993 |
| 5 | * The Regents of the University of California. All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to Berkeley by |
| 8 | * Ralph Campbell. This file is derived from the MIPS RISC |
| 9 | * Architecture book by Gerry Kane. |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or without |
| 12 | * modification, are permitted provided that the following conditions |
| 13 | * are met: |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer. |
| 16 | * 2. Redistributions in binary form must reproduce the above copyright |
| 17 | * notice, this list of conditions and the following disclaimer in the |
| 18 | * documentation and/or other materials provided with the distribution. |
| 19 | * 3. Neither the name of the University nor the names of its contributors |
| 20 | * may be used to endorse or promote products derived from this software |
| 21 | * without specific prior written permission. |
| 22 | * |
| 23 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 24 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 25 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 26 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 27 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 28 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 29 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 30 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 31 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 32 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 33 | * SUCH DAMAGE. |
| 34 | * |
| 35 | * @(#)regdef.h 8.1 (Berkeley) 6/10/93 |
| 36 | */ |
| 37 | #ifndef _MIPS_REGDEF_H_ |
| 38 | #define _MIPS_REGDEF_H_ |
| 39 | |
| 40 | #define zero $0 /* always zero */ |
| 41 | #define AT $at /* assembler temp */ |
| 42 | #define v0 $2 /* return value */ |
| 43 | #define v1 $3 |
| 44 | #define a0 $4 /* argument registers */ |
| 45 | #define a1 $5 |
| 46 | #define a2 $6 |
| 47 | #define a3 $7 |
| 48 | #if defined(__mips_n32) || defined(__mips_n64) |
| 49 | #define a4 $8 /* expanded register arguments */ |
| 50 | #define a5 $9 |
| 51 | #define a6 $10 |
| 52 | #define a7 $11 |
| 53 | #define ta0 $8 /* alias */ |
| 54 | #define ta1 $9 |
| 55 | #define ta2 $10 |
| 56 | #define ta3 $11 |
| 57 | #define t0 $12 /* temp registers (not saved across subroutine calls) */ |
| 58 | #define t1 $13 |
| 59 | #define t2 $14 |
| 60 | #define t3 $15 |
| 61 | #else |
| 62 | #define t0 $8 /* temp registers (not saved across subroutine calls) */ |
| 63 | #define t1 $9 |
| 64 | #define t2 $10 |
| 65 | #define t3 $11 |
| 66 | #define t4 $12 |
| 67 | #define t5 $13 |
| 68 | #define t6 $14 |
| 69 | #define t7 $15 |
| 70 | #define ta0 $12 /* alias */ |
| 71 | #define ta1 $13 |
| 72 | #define ta2 $14 |
| 73 | #define ta3 $15 |
| 74 | #endif |
| 75 | #define s0 $16 /* saved across subroutine calls (callee saved) */ |
| 76 | #define s1 $17 |
| 77 | #define s2 $18 |
| 78 | #define s3 $19 |
| 79 | #define s4 $20 |
| 80 | #define s5 $21 |
| 81 | #define s6 $22 |
| 82 | #define s7 $23 |
| 83 | #define t8 $24 /* two more temp registers */ |
| 84 | #define t9 $25 |
| 85 | #define k0 $26 /* kernel temporary */ |
| 86 | #define k1 $27 |
| 87 | #define gp $28 /* global pointer */ |
| 88 | #define sp $29 /* stack pointer */ |
| 89 | #define s8 $30 /* one more callee saved */ |
| 90 | #define ra $31 /* return address */ |
| 91 | |
| 92 | #endif /* !_MIPS_REGDEF_H_ */ |